Lesson Plan

The Distance Between Two Rational Numbers

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This The Distance Between Two Rational Numbers lesson plan also includes:

There has to be a better way than counting. Pupils find the distance on a number line between rational numbers by counting the number of intervals. Through a discussion, the class sees the connection between absolute value and the distance between two points. Class members use the derived formula to find distances and confirm it works by counting in the 6th part of a 25-part series.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Relate finding distances to determining the distance traveled on a road between mile markers
Classroom Considerations
  • Pupils should know how to determine the absolute value of a number
  • Assumes scholars are familiar with subtracting rational numbers
Pros
  • Includes suggestions on different instructional techniques
  • Answer keys show how to change the subtraction problems into addition problems
Cons
  • None
Common Core